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Estrogen-only therapy lowers Alzheimer’s pathology odds by 35%

8/13/2026

Summary

Story summary

Neuroscientist Hadi Hosseini reported estrogen-only therapy cut Alzheimer’s pathology odds on autopsy by 35 percent.
The analysis of 21,462 records and nearly 3,000 brain donors found fewer amyloid plaques, tau tangles and lower blood amyloid in estrogen users.
7 percent of participants over 50 used estrogen-only therapy and had lower odds of memory loss.
Missing hysterectomy records prevented assessment of combined estrogen-progesterone therapy, prompting Stanford’s Jennifer Bruno to call for randomized trials.

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Story summary

Neuroscientist Hadi Hosseini reported estrogen-only therapy cut Alzheimer’s pathology odds on autopsy by 35 percent.
The analysis of 21,462 records and nearly 3,000 brain donors found fewer amyloid plaques, tau tangles and lower blood amyloid in estrogen users.
7 percent of participants over 50 used estrogen-only therapy and had lower odds of memory loss.
Missing hysterectomy records prevented assessment of combined estrogen-progesterone therapy, prompting Stanford’s Jennifer Bruno to call for randomized trials.